Economics-wise, the impact of the games could be bad
It’s hard to gauge the Olympic impact of the games until they are over. Will London still be using that beautiful velodrome in 2062? There’s not really any way to tell right now.

In conclusion: a short-term success, but their long-term impact remains unclear
It’s been pretty amazing to see the British public suddenly go from weary scepticism before the games to un-ironic excitement during the games, and it’s hard to argue that the sporting events themselves have been anything less than a success.

But, that is a short-term success. The games that have been considered a success in the long term are the ones where they managed to change the city for the good (Barcelona is the great recent example). London could be changed for the better after the games, but will they change it enough to be considered a good investment? The indications that the event has hurt London’s economy certainly give us reason to worry.